OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application1 d2 V) [$ Z4 h! Q( K5 A5 H
/*
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* edma_test.c
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* brief EDMA3 Test Application1 X2 W F) P" a6 f& w0 B: A
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* This file contains EDMA3 Test code.
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*
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE, v" X6 ?) S& _# ]6 {
* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT4 U* x- _3 M8 u$ q
* TO CHANGE.1 G# e& ]; b, L) h) I* i
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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* This program is free software; you can redistribute it and/or% K: C: G. Z3 a6 d
* modify it under the terms of the GNU General Public License as# V7 x3 R/ |4 @# V8 H
* published by the Free Software Foundation version 2.
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.7 n K% f. {1 F1 l" X+ W
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#include <linux/module.h>2 O3 v7 L' x$ u% {2 r7 g# N/ V, s3 E
#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/types.h>- U3 X0 O% z q0 F
#include <linux/interrupt.h>- D! X5 s5 h8 h# f- v& n
#include <asm/io.h>( O+ I+ l0 \/ P( t& c W9 G' c
#include <linux/moduleparam.h>2 V f( o. s1 b% O; ~6 g! m1 E
#include <linux/sysctl.h>; m5 ~; I# T+ ~! ]& M, m
#include <linux/mm.h>+ a1 Q+ x6 g+ T. ^! ? x
#include <linux/dma-mapping.h>3 v5 B2 l6 L7 P7 h$ p, |$ h
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#include <mach/memory.h>/ C$ F! F& W8 C, @/ x' B
#include <mach/hardware.h>
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#include <mach/irqs.h>
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#include <asm/hardware/edma.h>. @5 L8 d' [' A* W/ l$ o
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#undef EDMA3_DEBUG! S& S: {7 d1 p' }" x1 e, v$ h# j
/*#define EDMA3_DEBUG*/# \. @, n4 n, w2 w8 l
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#ifdef EDMA3_DEBUG
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#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
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#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)- @' r7 c+ E V9 K$ y& U
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)+ A+ ~1 `% d# e* y) A0 Z( p
#else) i5 c+ Q: v; C& e# e6 u, I; F
#define DMA_PRINTK( x... )
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#define DMA_FN_IN! A# X* h; b8 H0 M' {
#define DMA_FN_OUT
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#endif
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)+ m0 S; s! a* D& R0 |/ u6 B
#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 21
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#define TCCHEN_SHIFT 22- g+ I8 e$ D% F4 I4 d
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;
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static volatile int irqraised2 = 0;2 m) Y& O/ p' G2 w
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);" T" t% U# \6 C( d$ v: l! p
int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);% K! {5 U' t4 F) _
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dma_addr_t dmaphyssrc1 = 0;. `' H3 w3 e( _3 A8 @
dma_addr_t dmaphyssrc2 = 0;
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dma_addr_t dmaphysdest1 = 0;! D R6 D1 p8 {. p3 N
dma_addr_t dmaphysdest2 = 0;3 E* V+ E" A* T5 w) y
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char *dmabufsrc1 = NULL;6 Y" H, Q$ _3 }" H t, A
char *dmabufsrc2 = NULL;! q1 ~+ _! d6 z. t, A. C$ `! y
char *dmabufdest1 = NULL;- P/ x) z- t, s6 D5 w! c
char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;# w, z. { k* z- R" Q- Y/ u
static int ccnt = 8;- S/ {$ T0 @( A5 u H
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);$ h4 k. K) `) X0 |' |
module_param(ccnt, int, S_IRUGO);

复制代码

   这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
   我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

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[未解决] OMAPL138如何在Linux下使用EDMA3驱动